root@overo:/sys/kernel/debug/mmc2# more regs
mmc2:
 enabled:       0
 dpm_state:     1
 nesting_cnt:   0
 ctx_loss:      0:0

regs:
SYSCONFIG:      0x00000015
CON:            0x00000601
HCTL:           0x00000b00
SYSCTL:         0x000e0007
IE:             0x00000000
ISE:            0x00000000
CAPA:           0x04e10080
root@overo:/sys/kernel/debug/mmc2# more ios
clock:          0 Hz
vdd:            0 (invalid)
bus mode:       1 (open drain)
chip select:    0 (don't care)
power mode:     0 (off)
bus width:      0 (1 bits)
timing spec:    0 (legacy)
root@overo:/sys/kernel/debug/mmc2# more clk
clk: No such file or directory
root@overo:/sys/kernel/debug/mmc2# more clock
0
root@overo:/sys/kernel/debug/mmc2#